This is the quintessential external bottom bracket tool, compatible with HollowTech II bottom brackets so that you can fit and remove a bottom bracket yourself using a 3/8" socket driver, 32mm wrench or an adjustable spanner.

This is the quintessential external bottom bracket tool, compatible with HollowTech II bottom brackets so that you can fit and remove a bottom bracket yourself using a 3/8" socket driver, 32mm wrench or an adjustable spanner.